Okay so I just got one of these laptops from eBay (yes, I know) for 49 bucks. I got it today, checked it over. Has Windows 7 Ultimate, no drivers at all. I installed all the drivers and it was running beautifully. Fullscreen HD youtube videos didn't even lag on this old boy. Unfortunately, right after installing Avast! and rebooting...it became completely unresponsive. I can select between a normal startup, safe mode, etc...so the keyboard is still FUNCTIONING...but when I get to the Windows logon screen, I cannot use the keyboard or touchpad... the network adapter is also not functioning, as I have an autoloading program which I can connect to from my desktop & control the laptop remotely. I was able to type my password and logon to Windows from that program on the last bootup before the issue started. I've tried rebooting, powering off, removing the charger and battery, etc... Does anybody have an idea of what would cause this? Please and thanks.